Will compressing reduce the quality of my PDF?

Compression mainly shrinks embedded images; text and vector content stay sharp. Higher compression levels reduce image quality more to save space.

Can I choose how much compression to apply?

Yes, pick a compression level so you can balance smaller size against image quality for your use case.

Will compressing a text-only PDF do much?

Not much, since compression mainly targets embedded images; a text-only PDF is usually already small.

Does Compress PDF upload my files to a server?

No. Compress PDF runs entirely in your browser using on-device processing, your files never leave your device.

Compress PDF

Reduce PDF file size while keeping quality.

Runs in your browser

Drop a PDF file here

Choose File

Runs entirely in your browser: downsamples and recompresses embedded JPEG images according to the level above, and re-optimizes the file's internal structure. PDFs made mostly of text or vector graphics, or with few/no JPEG images, won't shrink much since there's little left to compress.

About this tool

A PDF that's larger than it needs to be — often from high-resolution embedded images — can be slow to email, upload or share, and shrinking it without ruining readability needs careful compression, not just a blunt size cut. This tool reduces PDF file size while keeping quality, giving you a smaller file that still looks right.

How to use this

1Drop a PDF file.
2Choose a compression/image quality level.
3Click Compress PDF to download the smaller file.

Troubleshooting

The output is barely smaller than the original.
Compression mainly shrinks embedded photos, a text-only or already-optimized PDF has little left to compress.

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